Ecclesiastes 1:6-8

6 The wind blows to the south and goes around to the north; around and around goes the wind, and on its circuits the wind returns.

7 All streams run to the sea, but the sea is not full; to the place where the streams flow, there they flow again.

8 All things are full of weariness; a man cannot utter it; the eye is not satisfied with seeing, nor the ear filled with hearing.